/Engine/Source/Runtime/Datasmith/CADKernel/Public/CADKernel/Topo/TopologicalFace.h
Trimmed the face with the boundary limit curves (Iso UMin, ...). This function is called to trim untrimmed topological face. This function should not be called if the topological face already has a loop.
void ApplyNaturalLoops ( const [FSurfacicBoundary](API\Runtime\CADKernel\CADKernel\Math\FSurfacicBoundary) & Boundaries )